Boost dropping off td04?

[After-Glanza]

This is a question directed at td04 users on a 4e. Im just wondering if a little boost drop off is normal up at high revs. An example would be in third gear, peak boost would be about 1.32bar but by around 7k it's about 1.25 and sometimes a bit less. Is this ok and normal for a td04? Im using an externally gated setup.

 

[weakboy2]

shouldnt drop off, probs to do with the ebc settings or a leak mate

 

[After-Glanza]

Hmmmm not sure as the ebc is pretty decent, it's a blitz dual sbc, would it possibly be to do with the gain?

I have looked for leaks but haven't found any. Only thing I can think of is that I have covered up a hole in my IC piping that used to have a water meth port in it with a silicone joiner. It looks to be tight but is it possible that in the higher revs a little bit of boost could be escaping.

 

[gorganl2000]

the slight drop off sounds about normal at those boost pressures on the tdo4l
u may be able to adjust your ebc to counter this a little.....but then its a lot of fiddling about for 1 psi

http://www.toyotagtturbo.com/forums/showthread.php?t=9128
look at the boost plot on there

 

[After-Glanza]

Ah right that's ok then, it seems to be worse on warm days obviously due to more heat. I will be upping the boost soon anyways so I'll see how it holds when I get that done.